Home / 3,221.28-4,829.13-1,272.42

Finding the Fourth Proportional to 3,221.28, 4,829.13 and 1,272.42

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Solution

The fourth proportional to 3,221.28, 4,829.13 and 1,272.42 is: 1,907.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.28 : 4,829.13 = 1,272.42 : x
  2. Step 2: Convert to fraction form
    3,221.28/4,829.13 = 1,272.42/x
  3. Step 3: Cross multiply
    3,221.28x = 4,829.13 × 1,272.42
  4. Step 4: Simplify right side
    3,221.28x = 6,144,681.59
  5. Step 5: Solve for x
    x = 6,144,681.59/3,221.28
  6. Step 6: Final answer
    x = 1,907.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.